A SWEDISH school has been evacuated following an explosion forcing children to flee and police have arrested a suspected perpetrator.

The explosion occurred shortly after the school day at Hässleholm Technical School began. The school is being investigated by the national bombing experts. Initially the police were investigating he incident as “ongoing fatal violence” but nobody was injured.

The school has about 1,000 students and is the area’s largest senior school, it is not known how many people were at the school at the time of the evacuation.

The noise made by the explosion have been described as ‘powerful’.

The pupils have been evacuated to the dome, a large gathering arena in Hässleholm.